India Launches New Attack Submarine

India has officially launched the second of its future fleet of six Scorpene-class (Kalvari-class) diesel-electric attack submarines at the state-run Mazgaon Docks Limited (MDL) in Mumbai on January 12, according to an Indian Ministry of Defense press release.

The new Kalvari-class boat, christened Khanderi, will now enter sea trials and is slated to be delivered to the Indian Navy by the end of the year. The lead sub of the class, Kalvari, is expected to be commissioned by the middle of 2017 following extensive sea trials. The remaining four subs will all be delivered by 2020 at an interval of nine months.

In 2005, French shipbuilder Direction des Constructions Navales Services (DCNS) was awarded a $4.16 billion contract (known as Project 75-I) to build six diesel electric attack submarines for the Indian Navy in in cooperation with MDL. The Project 75-I contract included the option of building six more Scorpene-class subs at MDL.

With DCNS apparently out of the competition for the next phase of Project 75-I, India will have to look among the French ship maker’s competitors – including Navantia (Spain), Kockums (Sweden), Rubin Design Bureau-Amur Shipyard (Russia), Mitsubishi Heavy Industries and Kawasaki Heavy Industries (Japan) – to choose a foreign defense contractor to build an additional six diesel-electric attack submarines in Mumbai.

The 1,550-ton Kalvari-class subs are fitted with an air-independent propulsion system and boast six 533 millimeter torpedo tubes, from which it can launch conventional anti-ship torpedoes, sea mines, and the Exocet SM39 anti-ship missile, a French-made sea-skimming, subsonic, solid-fueled anti-ship missile with an estimated operational range of 50 kilometers. The DCNS data leak also included sensitive details on the Exocet missile.